1157257568 has 24 divisors (see below), whose sum is σ = 2279121768. Its totient is φ = 578433024.

The previous prime is 1157257561. The next prime is 1157257573. The reversal of 1157257568 is 8657527511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157257561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156155 + ... + 163397.

It is an arithmetic number, because the mean of its divisors is an integer number (94963407).

Almost surely, 2^1157257568 is an apocalyptic number.

It is an amenable number.

1157257568 is a deficient number, since it is larger than the sum of its proper divisors (1121864200).

1157257568 is an equidigital number, since it uses as much as digits as its factorization.

1157257568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12246 (or 12238 counting only the distinct ones).

The product of its digits is 588000, while the sum is 47.

The square root of 1157257568 is about 34018.4886201607. The cubic root of 1157257568 is about 1049.8888976927. Note that the first 4 decimals are identical.

The spelling of 1157257568 in words is "one billion, one hundred fifty-seven million, two hundred fifty-seven thousand, five hundred sixty-eight".